Rich Text Editors (livejournal, etc.) are not compatible with Safari.
Hi Ben! Thanks for the bug report. Could you please be more specific about which site(s) are having problems? Ideally, each site needs its own bug to track the issue.
Also, have you tried the WebKit nightly? http://nightly.webkit.org/
There have been many improvements in this area, although sometimes an update on the server side is required for them to become active. (That's the other reason we need bugs for each site!)
This is far too general to be a useful bug report. If you encounter any issues when using a nightly build of WebKit, please file a new bug report and include some information we may use to investigate the problem. Required information would include the URL you are experiencing the problem on, a list of steps you are following to reproduce the problem, and the expected results vs. what you are actually seeing.